Automatic pump.



S. J. JACKSON.

AUTOMATIG PUMP.

APPLICATION FILED 'AUG.17. 1909.

960,942. Patented June 7, 1910.

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SAMUEL J. JACKSON, 0F PLEASANTON, CALIFORNIA.

AUTOMATIC PUMP.

Specification of Letters Patent.

Application filed. August 17, 1909.

Patented June 7, 1910. Serial No. 513,226.

To all whom 'it may concern:

Be it known that I, SAMUEL J. J ACKSON, a citizen of the United States, residing at Pleasanton, in the county of Alameda and State of California, have invented new and useful Improvements in Automatic Pumps, of which the following is a specification.

This invention relates to automatic pumps, the object being to provide a pumping apparatus which will operate automatically when the water level of a tank falls below a predetermined point, the pump being thrown automatically into operation and serving to refill the tank whereupon the pump is automatically thrown out of operation again, the operation being repeated every time the water level falls to a certain point, without any attention on the part of the operator.

With the above general object in view the invention consists in the novel construction, combination and arrangement of parts herein fully described, illustrated and claimed.

In the accompanying drawings :-Figure l is a vertical sectional view of an automatic pumping apparatus embodying the present invention. Fig. 2 is a detail view of a portion of the pump, taken at right angles to Fi 1.

Referring to the drawings 1 designates a water tank from which a supply or service pipe 2 leads ofl' while 3 designates the source of water supply which is shown in the pres ent instance in the form of a well or cistern.

1 1 designates a pump casing to which water is fed from the supply 3 by means of a pipe 5. Another pipe 6 extends from the pump casing 1 into the tank 1.

7 designates an electric motor from which a driving belt 8 extends to and around a pulley 9 on the pump casing, the shaft of said pulley carrying a disk 10 to which is connected the pitman 11 of the pump.

Arranged in the tank 1 is a float 12 which always rests upon the water and extending from said float upward is a flexible connection 13 which runs over pulleys 14 carried by a cross bar 15 in the upper portion of the tank, the opposite end of said flexible connection 13 having a weight 16 attached thereto.

Mounted within the tank and having one end thereof arranged within the path of the vertically moving weight 16 is a trip lever 17 fulcrumed intermediate its end at 18. From the other end of said lever a rod 19 extends downward and connects to one arm of a switch lever or circuit-closing lever 20 which is fulcrumed at 21 within the tank 1 near the bottom thereof. One arm of the lever lies in the path of the movement of the weight 16 so as to be depressed thereby while the other arm of said lever is adapted to come in contact with a bridge and pair of contacting points 22 in the bottom of the tank to which are connected circuit-closing Wires 23 which lead to the electric motor 7.

24.- designates the circuit wires which feed the motor 7 From the foregoing description it will be understood that when the water in the tank 1 reaches a certain level, the weight 16 in moving upward will operate the lever 17 and through the rod 19, the lever 20 will close the circuit formed by the wires 23 and start the electric motor which will in turn drive the pump and force water from the supply 3 into the tank 1. The pump continues in operation until the tank is nearly or quite full and at this time the float 12 has ascended to the top of the tank while the weight 16 has moved downward until it comes in contact with the projecting arm of the lever 20 whereupon the lever 20 is rocked so as to break the circuit and thereby cut off the motor and the pump. The operation referred to is entirely automatic both in stopping and starting, and requires no attention whatever after the mechanism has once been properly adjusted.

I claim 1. The combination of a water supply, a pump, an electric motor for driving said pump, a tank, a pipe leading from the pump to the tank, a service pipe leading off from the tank, a float and a weight joined by a flexible connection leading over superimposed guides, a pivoted circuit closing lever having one arm arranged in the path of movement of said weight, another lever also arranged in the path of said weight while moving in the opposite direction, and a rod connecting the two levers, whereby the electrical circuit controlling the motor is automatically opened and closed in accordance with the level of water in the tank, substan tially as described.

2. The combination of a water supply tank, a pump for supplying water thereto, a motor for driving the pump, a device for throwing the motor into and out of operation, a float actuated element arranged Within the tank, and means mounted Wholly I move together When either lever is actu- Within the tank for controlling the said device, said means consisting of separate levers spaced apart one above the other and separately mounted in the tank and between which the element moves with the varying level in the tank for raising one lever "when the maximum level is reached and for depressing the other lever when the minimum level is reached, a connecting member between the levers for causing the same to ated by the element to control the said device, said levers and members being so ar ranged that they will remain in a position to which they are moved by the element.

In testimony whereof I afliX my signature in presence of two Witnesses.

SAMUEL J. JACKSON. \Vitnesses A. L. HARMS, CHAS. A. GALE. 

